Qurban is an activity of slaughtering sacrificial animals carried out on Eid alAdha by Muslims every year. The process of slaughtering qurban animals at the Sabilul Jannah mosque, Jalan Pemudi, Payung Sekaki Pekanbaru Subdistrict, already uses a qurban animal slaughtering tool. From its use, there are still obstacles in the form of a donor tool that can only be reused after waiting for t…
SMAW welding is a method of joining metals from several electrode rods using heat energy. Several welding parameters affect the welding results including the amount of current and electrical polarity, welding speed, electrode, welding position, and seam. This research discusses the effect of electrode diameter variation on SMAW welding penetration using direct polarity current. Electrod…
The increasingly critical greenhouse gas effect encourages various countries to accelerate the transition to new and renewable energy that is environmentally friendly. Previous research has shown that hydrogen can be an alternative energy source to reduce dependence on non-renewable carbon-based fossil fuels. The application of hydrogen technology to internal combustion engines can be …
PT. Sejahtera Mandiri Pekanbaru is a company engaged in fabrication, bodywork, and steel construction services, located at Jl. Raya Pekanbaru - Bangkinang KM 16. The company is particularly renowned for manufacturing truck beds and tanks. However, its production costs are quite high, prompting the company to optimize its layout. Layout efficiency is crucial as material handling costs a…
PT Delima Inti Perkasa (DIP) is a company engaged in the manufacture of conveyors. This company has a workshop that is used as a place to produce conveyors, conveyors in a palm oil mill are many types that are produced in the workshop but only differ in size. In the production process there is backtracking which causes the production process distance to be long. The purpose of this stud…
This research aims to test the performance of a monohull type tourist boat prototype using a two-stroke engine for the National Unmanned Fast Boat Contest (KKCTBN). The contest is an event to promote maritime technology innovation to support the tourism sector in Indonesia. The development of a monohull type boat with a two-stroke engine was chosen for its superior stability and speed. …
A pressure vessel is a device used to store or contain pressurized fluids, either in the form of gas or liquid. The design of pressure vessels is carried out to ensure they can hold pressurized fluids with pressures higher or lower than the ambient pressure, or with fluid temperatures inside the vessel that are higher or lower than the ambient temperature. In the palm oil mill industry,…
Aerodynamics is an important part of a vehicle because it has a major influence when the vehicle is moving at a certain speed. Aerodynamics is influenced by form factors and fluid flow that is in direct contact with the surface of the vehicle. Aerodynamic drag is caused by the occurrence of stagnation areas at the front of the vehicle through which fluid flow passes, the drag that occur…
This study aims to design and analyze the structure of a vibrating screen machine with a capacity of 60 tons/hour, used for screening palm shells. The machine has a screen dimension of 6 m x 2.8 m with a mesh size of 7 mm and a slope of 15 degrees. The driving power of 30 HP from the motor, rotating at 3240 rpm, is transmitted through pulleys configured with 5 inches on the motor and 9 …
The aim of this research is to compare the magnitude of total deformation, equivalent stress (von misses), and safety factors using alternative materials with the original material of the body frame under conditions of straight movement with constant speed, acceleration, deceleration, and turning on the University of Indonesia electric bus. This research was carried out using a computat…
Robot manipulator is a hand robot created for one or more specific functions, having the form of rigid arms connected in series with joints that can move around (rotation) or extend and shorten (translation). There are several types of manipulator robots, one of which is the cartesian robot type. Almost all cartesian type robots use firmware that has been made, such as the GRBL firmware…
Analysis of the structural strength of large electric bus chassis is needed to determine the ability to withstand various loads. This research aims to compare the amount of total deformation, equivalent stress (von Mises), and safety factor between the original chassis material, namely SS400, and the alternative materials SUS201, STKM16A, and ASTM A302 in conditions of straight movement…
A four dof (degrees of freedom) robot arm simulator equipped with a two-finger gripper is designed to determine the movement of the robot manipulator. To make the arm robot simulator, the author uses PLA (polylactic acid) filament material, servo motor as driver and Arduino Uno as microcontroller. PLA filament was chosen because it is lightweight, strong and durable. Arduino Uno was cho…
A fixed wing VTOL vehicle is a combination of a rotary wing and a fixed wing vehicle. It can fly with good efficiency and the ability to take off and land vertically. The ability to fake off and land vertically is due to the additional propulsion system. However, the use of this propulsion system results in increased air dragfrom the auxiliary propulsion system. To overcome this problem, t…
Grilling tools used today generally still use square-shaped wire clamps. The fish or chicken to be grilled is arranged and clamped then placed on top of the combustion chamber and fanned manually. Through this method, uneven roasting results are obtained or charred in certain parts because the combustion chamber is too close. Apart from that, manual fanning also requires special energy …
The sandblasting process is a surface cleaning process which is carried out by shooting particles onto the surface of an object so that friction or impact arises. The aim of making sandblasting with a 5 kg gas cylinder is to obtain sandblastingthat has flexibility so that it can be operated according to the curved shape of the workpiece. / complicated and can be moved. The sand used f…
Many problems that arise in mechanical work in the field are experienced by technical expertsin theirfield, such as fatigue problems (the occurrence of material damage due to repeated loading) which are difficult to predict when they occur, and cannot be seen with the naked eye that in some form materials such as shafts show signs of fatigue fracture, therefore a simple rotary bending fatig…
Pump as Turbine (PAT) is a term that refers to a pump that can also function as a turbin. These pumps can convert fluid flow into mechanical energy when operating as a turbine. This allows the use of the same device to flow fluid to somewhere (as a pump) and generate energy if the flow direction of fluid is reversed (as a turbin) with the type of pump used is a centrifugal pump. The problem of …
This paper presents research on how to reduce or prevent energy loss due to friction. By using several methods to reduce friction between two contact surfaces, one of which is the use or addition of lubricant to the contact surface. This finding emphasizes the importance of lubricants to determine wear values and friction coefficients, where this lubricant provides space between engine elements…
Aerodynamics is one of the important parts of a vehicle because aerodynamics has a major influence when the vehicle is moving at a certain speed. Aerodynamics is influenced by form factors and fluid flow that is in direct contact with the vehicle surface. Aerodynamic drag is caused by the occurrence of a stagnation area at the front of the vehicle through which the fluid flow passes, the drag t…